Issue with AngularJS directive: Isolated scope preventing values from being inserted into template

After setting up the directive below:

angular.module('news.directives', [])
    .directive('newsArticle', function($location, $timeout) {
        return {
            restrict:    'AE',
            replace:     'true',
            templateUrl: 'partials/pages/news/directives/article.html',
            scope:       true
        };
    });

As well as using this template:

<div id="story-{{item.id}}" ng-class="{'red': item.active, 'story-container': true}">
    <div class="story-banner-image"></div>
    <div class="story stationary">{{ item.title | words: 10 }}</div>
    <div class="story-banner-content"></div>
</div>

And calling the directive like this:

<news-article ng-repeat="item in news">
</news-article>

The setup works perfectly. However, when attempting to implement an isolated scope and expose either a single item or all news items:

scope: {
    item: '@'
}

// or

scope: {
    news: '@'
}

// or

scope: {}

The {{item.property}} tags within the template come back as null values. The question arises - why does the isolated scope not recognize the 'item' variable?

Answer №1

When the scope is set to true, the element clearly inherits its parent properties, but it fails to inherit when specifically instructed to do so.

The issue lies in a misunderstanding of how the scope configuration should be implemented. For two-way data binding with an isolated scope, you must include the corresponding attribute in the HTML:

<news-article ng-repeat="item in news" item="item"></news-article>

Then, configure the directive as follows:

scope: {
    item: '='
}

Check out the demo here: http://plnkr.co/edit/b1I8PIc27MvjVeQaCDON?p=preview

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